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  <title>Returns an integer describing the backend used by libev</title>
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    <li>Returns an integer describing the backend used by libev</li>
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  <div id="layout-content"><div id="ev.backend" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">Ev::backend</h1>
  <p class="verinfo">(PECL ev &gt;= 0.2.0)</p><p class="refpurpose"><span class="refname">Ev::backend</span> &mdash; <span class="dc-title">Returns an integer describing the backend used by libev</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-ev.backend-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">final</span>
   <span class="modifier">public</span>
   <span class="modifier">static</span>
   <span class="methodname"><strong>Ev::backend</strong></span>(): <span class="type">int</span></div>

  <p class="para rdfs-comment">
   Returns an integer describing the backend used by
   <em class="emphasis">libev</em>
   . See
   <a href="class.ev.html#ev.constants.watcher-backends" class="link">Backend flags</a>
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-ev.backend-parameters">
  <h3 class="title">参数</h3>
  <p class="para">此函数没有参数。</p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-ev.backend-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns an integer(bit mask) describing the backend used by
   <em class="emphasis">libev</em>
   .
  </p>
 </div>

 <div class="refsect1 seealso" id="refsect1-ev.backend-seealso">
  <h3 class="title">参见</h3>
  <ul class="simplelist">
   <li class="member">
    <span class="classname"><a href="class.evembed.html" class="classname">EvEmbed</a></span>
   </li>
   <li class="member">
    <span class="methodname"><a href="ev.embeddablebackends.html" class="methodname" rel="rdfs-seeAlso">Ev::embeddableBackends()</a> - Returns the set of backends that are embeddable in other event loops</span>
   </li>
   <li class="member">
    <span class="methodname"><a href="ev.recommendedbackends.html" class="methodname" rel="rdfs-seeAlso">Ev::recommendedBackends()</a> - Returns a bit mask of recommended backends for current
  platform</span>
   </li>
   <li class="member">
    <span class="methodname"><a href="ev.supportedbackends.html" class="methodname" rel="rdfs-seeAlso">Ev::supportedBackends()</a> - Returns the set of backends supported by current libev
  configuration</span>
   </li>
   <li class="member">
    <a href="class.ev.html#ev.constants.watcher-backends" class="link">Backend flags</a>
   </li>
  </ul>
 </div>

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